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Class Information
Number: 331/65
Name: Oscillators > With device responsive to external physical condition
Description: Subject matter wherein the oscillator is combined with means distinct from the oscillator system or wherein the means is a modified element of the oscillator, which means is responsive to a nonelectrical condition external to the oscillator, a current characteristic of the oscillator, (e.g., amplitude or frequency) being varied in accordance with changes in the sensed condition.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7626466 |
Proximity switch and method for operating a proximity switch |
Dec. 1, 2009 |
| 7583154 |
Voltage controlled oscillator |
Sep. 1, 2009 |
| 7528597 |
Induction sensor |
May. 5, 2009 |
| 7511476 |
Electromagnetic sensor systems and methods of use thereof |
Mar. 31, 2009 |
| 7511585 |
Automatic page detector |
Mar. 31, 2009 |
| 7429858 |
Oscillating-beam magnetometer |
Sep. 30, 2008 |
| 7418614 |
External signal detection circuit and real-time clock |
Aug. 26, 2008 |
| 7398163 |
Sensing apparatus |
Jul. 8, 2008 |
| 7348857 |
Monitoring and compensating for real time local circuit speed in an integrated circuit |
Mar. 25, 2008 |
| 7332975 |
Reference-less clock circuit |
Feb. 19, 2008 |
| 7327197 |
Radiation hardened phase locked loop |
Feb. 5, 2008 |
| 7271670 |
CR oscillation circuit |
Sep. 18, 2007 |
| 7242260 |
Real time clock apparatus |
Jul. 10, 2007 |
| 7209013 |
Systems and methods for self-calibration |
Apr. 24, 2007 |
| 7119551 |
Capacitive sensor |
Oct. 10, 2006 |
| 7106143 |
Method for achieving highly reproducible acceleration insensitive quartz crystal oscillators |
Sep. 12, 2006 |
| 7098748 |
Integrated CMOS high precision piezo-electrically driven clock |
Aug. 29, 2006 |
| 7053319 |
Electronic weighing apparatus utilizing surface acoustic waves using sensors operating at different frequencies, having temperature compensation, and a push oscillator |
May. 30, 2006 |
| 7049935 |
Sizing of an electromagnetic transponder system for a dedicated distant coupling operation |
May. 23, 2006 |
| 7042213 |
Magnetometer having an electromechanical resonator |
May. 9, 2006 |
| 7023286 |
Systems and methods for self-calibration |
Apr. 4, 2006 |
| 7015762 |
Reference timing signal apparatus and method |
Mar. 21, 2006 |
| 6948388 |
Wireless remote sensor |
Sep. 27, 2005 |
| 6922111 |
Adaptive frequency clock signal |
Jul. 26, 2005 |
| 6912426 |
Method for determining time constants of a reference model in a cascade controlling circuit |
Jun. 28, 2005 |
| 6911873 |
Detection circuit and method for an oscillator |
Jun. 28, 2005 |
| 6873215 |
Power down system and method for integrated circuits |
Mar. 29, 2005 |
| 6850125 |
Systems and methods for self-calibration |
Feb. 1, 2005 |
| 6803859 |
Method and apparatus for active isolation in inductive loop detectors |
Oct. 12, 2004 |
| 6711518 |
Method for electronically aligning the frequency of an infrared transmitter |
Mar. 23, 2004 |
| 6611178 |
Nanometer-order mechanical vibrator, production method thereof and measuring device using it |
Aug. 26, 2003 |
| 6600380 |
Method and device for measuring the damping of an LC-oscillating circuit |
Jul. 29, 2003 |
| 6590400 |
Inductive signature measurement circuit |
Jul. 8, 2003 |
| 6583676 |
Proximity/touch detector and calibration circuit |
Jun. 24, 2003 |
| 6556090 |
Oscillator circuit for a validator |
Apr. 29, 2003 |
| 6535694 |
Finger actuated device having a proximity detector |
Mar. 18, 2003 |
| 6512370 |
Low power, frequency-mode magnetometer |
Jan. 28, 2003 |
| 6448513 |
Electronic weighing apparatus utilizing surface acoustic waves |
Sep. 10, 2002 |
| 6396891 |
Frequency control apparatus and method, and storage medium storing a program for carrying out the method |
May. 28, 2002 |
| 6384596 |
Variable inductance transducer circuit producing an electrical current and voltage output |
May. 7, 2002 |
| 6356079 |
Phase-shift type magnetic-field sensor using a magnetic substance |
Mar. 12, 2002 |
| 6345228 |
Road vehicle sensing apparatus and signal processing apparatus therefor |
Feb. 5, 2002 |
| 6337602 |
Method and apparatus for active isolation in inductive loop detectors |
Jan. 8, 2002 |
| 6337971 |
System for controlling and monitoring agricultural field equipment and method |
Jan. 8, 2002 |
| 6326563 |
Mass sensor and mass sensing method |
Dec. 4, 2001 |
| 6304083 |
Magnetic field sensor with colossal magneto-resistive material contained within the coil of an oscillator |
Oct. 16, 2001 |
| 6278335 |
Oscillator circuit |
Aug. 21, 2001 |
| 6255810 |
Inductive angle sensor having coupled oscillators with similar inductive response |
Jul. 3, 2001 |
| 6215365 |
Inductive proximity sensor oscillator |
Apr. 10, 2001 |
| 6204771 |
Load indicating fastener systems method and apparatus |
Mar. 20, 2001 |
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